Kazune Mikura is a character from the anime film adaptation of the fantasy novel Whoever Steals This Book. She is the late mother of the story's protagonist, a high school student named Mifuyu Mikura. As a deceased parent who appears only in the background of the narrative, specific details about Kazune's personality, personal motivations, and individual role in the story are not extensively detailed in available sources. Her primary function within the plot is defined by her absence and her relationship to the main character. No information is available regarding her development throughout the story, any notable abilities she might possess, or her key relationships beyond her maternal connection to Mifuyu. The character is voiced in the Japanese-language release of the film by Inori Minase.